Parting means for looms



May 14, 1935. "5 NlcHoLs 2,001,310

PARTING MEANS FOR LOOMS Filed Oct. 10, 1934 1N VENTOR.

23 1 E4 fbh AED C MC/7101.5. W/T/VEJS,

' BY CZ/NTQNSCOBUEN. A

ATTORNEY. Y

Patented May 14, 1935 UNITED STATES:

mar ne MEANS Foa L ooMs" Edward C. Nichols ;UptonlfMasa. lassignor to:

Draper Corporation, Hopedal e, .Mass a corpo ration of Maine Application October 10, mag-serial No.74:7,75 8" i I I solaim's. ic ng);.254 1 I j manner as to be swung rearwardly, toward the lay, to feel for an improperly boxed shuttle. The shuttle feeler operates to prevent filling replenishment when it detects that the shuttle is not fully entered into the shuttle box. It is also common practice to provide the shuttle feeler with thread parting and clamping means, including parting and clamping blades pivoted on the shuttle feeler, for parting the outgoing filling end between the shuttle and the selvage, and clamping the part thereof which extends to the cloth selvage. Such blades are usually provided with a depending'heel adapted to be struck by the lay for closing I the blades. I

Difiiculty has been experienced in properly tim ing the operation of the prior parting and clamping devices of the type just described. More specifically, if the devices are operated too early in the loom cycle they willpart the filling thread on every call for replenishment, even though the shuttle may be improperly boxed and the call accordingly revoked. On the other hand, if the devices operate late the outgoing end may be broken by the replenishing operation and thus removed from the field of action of the parter before the latter has operated. Thus, the timing I of the closing of the parting and clamping blades must be quite accurate. Prior to the present invention there was no way in which such timing could be accurately adjusted.

Accordingly, it is the principal object of the present invention to provide in a device of the class described, thread parting and clamping members which are pivoted on a shuttle feeler, a lay-engaging plate on the members, and means for accurately adjusting the plate to thereby vary the timing of the closing of the parting and clamping members.

Other objects will become apparent as the description proceeds.

In the preferred embodiment of the invention the adjustable plate is mounted on a depending heel on the parting and clamping blades, the plate being mounted in the plane of the blades so that the edge of the plate is struck by the lay for closing the blades. The plate is mounted for adjustment along a line which extends at an "acute angle to the direction of movement-10f.

the lay. This adjustment is very accurate, and is comparatively free from any tendency to'loosen under the impact ofthe-lay. This latter feature is of material importance for obvious rea'sons'.

For detailed disclosure of, the saidpreferred embodiment reference "may be" had to the ac companying drawing, of which Fig. 1- is a perspective view, ofthe said embodim'nti 1 Fig; 2 isa side elevation of the partingand clamping devices; and Fig. 3 is a plan view of the'same.

partly in section,i

applied is largely of conventional design. 3

Theloom to which my inventionhas be'en There z is accordingly illustrated on the drawin'g only j so much of the loom asis necessary to an under standing of the-invention. "There is shown; Fig.

1, a part of the lay- I and the front box plate 2 I of the-right hand-shuttle box. The lay is adapted to be reciprocated'toward and from thefr'ont of the loom in the usual manner, andtheshuttle 3 is adapted to-be'pickedalong the lay and received at each endof its flight in a suitable shuttlebox. I 5 H The shuttle 'feeler' l ispivoted on a stud 5 in a-bracket 6 which is adapted to be supported by the loomframe (not'shown). V retracted, position of the shuttle'feeler is clockwise from the position of- Fig. 1 and the shuttle feeler is moved upwardly and rearwardly into; the feeling position of Fig.1 only upon a call. for filling replenishment." The: shuttle feeler is so moved by an arm I engaging pin 8. A knife opening device .9 issupported from the bracket 6, and a revoking. connection l0 extends from The normal, or

the shuttlefeeler to other mechanism not shown.

- A- fixed parting blade H and a fixed clamping blade l2 are supported on a pivot bolt 13 which extends through-the shuttle feeler. The fixed blades l and I2 are held from pivoting onthe bolt I 3 as by means of a pin M in the shuttle feeler. Movable-parting and clamping members areconveniently comprised of parting blade I 5 and clamping blade 16 both of which are pivoted onthe bolt 'l3.-' The movable blades are opened bythe device '9 as the shuttle feeler moves -rear-' wardly and closed "by the lay" will" hereinafter appear. A spring washer I! may be positioned beneath the head of bolt l3 for yieldingly pressing the parting and clamping members together.

All of the parts of the shuttle feeler mechanism, and all of the parting and clamping device thus far described, are old and well known in the art. They are of'the present invention front center would result in the outgoing filling from the drawing that the closing of these cti ne v in members substantially before the lay reaches thread t being parted before the shuttle feeler had performed its function. Thuspthe thread would be parted even though the call for replenishment were subsequently, revoked, which constitutes a defect in the weaving operation. Del I on said heel parallel to said members and adaptfective operation would also result from the delaying of the parting operation until the lay has reached-front center, for; at such-time the exhausted, bobbin (not'shown) hasbeen ejected fromthe shuttle which would result in an uncut thread t'beingi, stretched, probably to thebreakingrpoint. 12, j

-\The presentinvention provides means whereby the timingof theclosing of the clamping and parting members may be'adjusted to a nicety, thereby eliminating both otthe aforementioned causes :of; defectiveloomoperation. To this end, the lay does not strike the heel piece l8, l9 directly but strikestherearward edge of a plate 20 which is adjustably secured to the heel, The plate is positioned parallel to the, clamping and panting,zmembersg- Preferably, therplate'is, not adjustable in a horizontal direction, whichis the directionof movement-of theday, but along a path inclinedto such direction.

r The-plate 20 of the specific :embodiment'shown on ,the drawing is-provided with parallel slots 21,- 22whichare inclined downwardly and rearwardly. The openerpinlS passes through the upperaslot 2| and; a securing bolt 24 passes through the other slot. The bolt andpinare relatively fixed innthe beel 18,19. The-ream ward sides of the. slots form cam surfaces engaging abutment surfaces constituted by the pin and bolt. ,-.In suchconstruetion the impact of'the lay is transmitted-to the heel in'a'directionat-an acute angle to the camsurfaces of the slots. The angle may be such that thereis practically no tendency for theday to drive the, plate out of adjustment; andthe clamping or securing device, as bolt 24, accordingly; need, not be so large asvto beimpracticable. ,Wh ile theuse, of a pin and slot connection, such as that justdescribed, is desirable in that it confines the plate Mtoreetilinear adjustment and thereby facilitates such "adjustment-it will be apparentthat the invention is not limited to this particular type .of connection. a Having fully disclosed the: preferred embodiment. of'myinventioml claim: 5; r

l. a shuttle feeler, thread 'parterand clamp, the combination'of a lay, a shuttle feeler,;parting and -,clamp i-ng;ymemberspivoted to said shuttle teeler, a dependiizig heel on said members, said heelhaving" a plate adapted to be struck by the lay for closing said members, and means for adjusting said plate toward and from the lay for varying the time of closing of said members.

2. In a shuttle feeler thread parter and clamp,

the combinationof a lay, a shuttle feeler, parting and clamping members pivoted to said shuttle feeler, a depending heel on said members, a plate on said heel parallel to said members and adapted to be struck by'th'e lay for closing the said members, an adjustable connection between said plate and heel permitting adjustment of the plate direction inclined to the direction of movement of the lay, and means for securing said platein adjusted position.

3. Ina shu ttle feeler thread parter and clamp, the combination of a'lay, a shuttle feeler, parting vandclamping7members pivoted to said shuttle,

feeler, a depending heel on said members, a plate ed to be struchbythe -lay for closing the said members, an adjustable connection'between said plate and heel, consisting of .a pin-and-slot, connection wherein the; slot extends at an acute angle to the direction of movement of the lay, and meansfor securing said plate in adjusted i ni a il heel-q a 4. In ashuttlef elerthread parter and clamp,

5. In a shuttle feele r thread parter and clamp,

the combination oi a lay, a shuttle feeler, parting andclamping members pivoted to said shuttle feeler, adepending heelon said members, a-plate on said heel parallel-to saidv members and adapted tqbe struck by the lay--ior closing the said m mberaqs d,Da a ase P e e h a s extending downwardly and ,rearwardly at an acute angleto the direction of movementof the lay, apinjn said heel engagingin said'slot and along which said plate is adjustable, and means for clamping, saidlplate in adjusted positionon saidlieeL; 1 -rj r 6. a uttle feeler threadparter and clamp for looms ihaving-a lay, the combination of a u il..; e :pe iin s d cla n me pivoted to said shuttle ieeler, a depending heel on said members, a pin projecting laterally. from said heehjr'neansiengaging saidpin for opening saidmembers, a plate on said heel parallel to said members, and adapted to be struck by the EDWARD ,c. mo -toils, 

